i think that there is no scanlation, and if they were i don't know where they are, and i think that few people here read them...

one piece blue is a special number in which oda makes a schedule (bounty, occupation, page and chapter of appearence, true name, abilities, devil fruits eaten, and everything about) to every character that appeared in the series before the fight against crocodile.
one piece red is where oda published the first version of romance dawn, the story that in the future will became the first chapter of volume 1, and some other stories written by him, that are not linked to one piece.

to be true, in one piece red, every character from the crew is introduced and there is the pilot chapter, romance dawn. you probably thought of wanted, a couple of mini stories that were drew by oda before one piece. maybe one day, we (null) will scanlate those two books, but it'd be really a hard task ! so full of text !